A metal parts manufacturer in Japan called Marudai has cooked up an iPhone case that offers protection against a .50 caliber bullet from the the rear. The inch of armor plating weighs a whopping 2 kg all told. Both white and black versions are available, and there's even a little hole so you can still use the camera. The manufacturer warns that the front won't take a bullet, and that the armor plating can easily scratch tables you place it on. Oh, and because of the weight, you'll probably want to call using both hands. Despite all of the protection, there's no guarantee that your phone will still work after getting hit, but at least the round probably won't make it through to whatever fleshy bits are on the other side.
Practical? No. Hilarious? You betcha. It's available now for 52,500 Yen, or $US 650, shipping included. Marudai will even throw in a 12.7 mm bullet casing so you can show how badass you are.